What should i do?

Iv recently noticed that a certain individual in my life that i rarely see due to them living so far away is in my dreams....maybe once every 2 or 3 dreams....due to this bieng a dream sign and dream signs in general what should i do to purposly induce a dream with them in it so i know im dreaming?
Iv never messed with dream signs aa i can never really find any but this i have figured out.....i also tend to dream alot about bieng on holiday for some reason.I believe as i never see this person much anymore that itd be a good dream sign.Any suggestions? Thanx
P.s i was thinking about using the persons picture with the words i am dreaming on it as a wallpaper for my phone but as it seems a good idea its also quiet weird and if ever they noticed my phone i think id die of embarrisment lol

you can say to yourself, when i see so and so i will know i'm dreaming :-) sometimes i draft a message on my phone to someone i don't know, and write important notes and every now and again i will look at it. Same goes for vacation every time you think of vacation say When i am on vacation i will know i'm dreaming.